buffer cache invalidation implementation issues

Programming errors in the implementation of the msync2 system call involving the MSINVALIDATE operation lead to cache consistency problems between the virtual memory system and on-disk contents. In some situations, a user with read access to a file may be able to prevent changes to that file from...

Linux kernel do_mremap() call creates virtual memory area of 0 bytes in length

Overview There is a vulnerability in the Linux kernel memory management routines that allows local users to gain superuser privileges. Description The Linux kernel contains a vulnerability in the domremap call that allows software to create a virtual memory area VMA with a length of 0 bytes. This...

security flaw

The mremap system call domremap in Linux kernel 2.4.x before 2.4.21, and possibly other versions before 2.4.24, does not properly perform bounds checks, which allows local users to cause a denial of service and possibly gain privileges by causing a remapping of a virtual memory area VMA to create...

Linux kernel do_brk() privilege escalation

Function may be used for allocation virtual memory exceeding user accessible memory limit, givin access to kernel internal structures...

CVE-2002-1667

The virtual memory management system in FreeBSD 4.5-RELEASE and earlier does not properly check the existence of a VM object during page invalidation, which allows local users to cause a denial of service crash by calling msync on an unaccessed memory map created with MAPANON and MAPNOSYNC flags...

FreeBSD-SA-02:22.mmap

-----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-02:22.mmap Security Advisory FreeBSD, Inc. Topic: mmap/msync denial of service Category: core Module: net Announced: 2002-04-18 Credits: Harry Newton Matt Dillon Affects: Al...

Linux news 4.10.00

Linux 2.2.18pre15 Alan Cox выпустил новую pre-версию следующего стабильного ядра Linux 2.2.18pre15. Эта версия уже почти готова к выходу, остаются неисправленные проблемы в архитектурно-зависимой части для PPC, Sparc и S/390, проблемы с драйвером megaraid и некоторые другие. Подробнее:...